At Abeno Harukas, the building was constructed to the lot boundary and the green zones were vertically positioned on the rooftop. Thus, it was impossible to secure vacant space on the ground as a construction yard where materials might be carried in.
It was critical to be able to bring in smoothly the huge amount of materials needed to build a 300-meter high skyscraper and continue the construction [uninterrupted].

To handle the amount of materials needed for a 300-meter high building with floors extending 30 meters underground, a temporary slope was constructed leading to the first underground floor to allow large vehicles, such as concrete mixer trucks, to drive into the first ground floor. This made it possible to simultaneously erect steel frames above the first floor and pour concrete to construct the underground floor during the day.

During the night, underground excavation was performed via the excavation opening on the first floor using the inverted construction method in parallel with the above-ground construction. The first underground floor was used to carry in materials for interior finishing and collect and carry out waste materials. Thus, a substantial amount of materials were handled in a small yard by utilizing the first floor and the first underground floor, day and night, and handling space and time in a multi-layered manner.